Internal-combustion engines – Charge forming device – Gaseous fuel and air mixer
Patent
1980-04-07
1981-09-22
Cox, Ronald B.
Internal-combustion engines
Charge forming device
Gaseous fuel and air mixer
123DIG11, F02M 1308
Patent
active
042904021
ABSTRACT:
A gas-operated internal combustion engine which includes an air/gas mixer and a volume control valve for feeding gas to the air/gas mixer. The volume control valve is normally biased into a closed position and includes a diaphragm adapted to be exposed on an operating side thereof to a vacuum ambient in the gas downstream of the volume control valve so as to urge the diaphragm to opening position of the volume control valve. A rear side of the diaphragm is adapted to be exposed to a control pressure. A pressure compensating connection is provided between the rear side of the diaphragm and a portion of the air supply system of the engine and terminates at or upstream of the air/gas mixer. A choke is arranged in the pressure compensating connection at either an air filter of the air supply system or a housing of the air/gas mixer with a check valve being disposed in the pressure compensating connection at a position between the choke and the volume control valve. A branch conduit branches off the pressure compensating connection at a position between the check valve and the volume control valve with a reversing valve being arranged in the branch conduit for selectively controlling the communication of the branch conduit with either the atmosphere or with the air/gas mixer.
REFERENCES:
patent: 3540419 (1968-10-01), Foy
patent: 3982516 (1976-09-01), Abernathy
patent: 4040403 (1977-08-01), Rose
patent: 4063905 (1977-12-01), Johnson
Cox Ronald B.
Daimler-Benz Aktiengesellschaft
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